Bad T-con or bad panel??

[Diah]

Re: Bad T-con or bad panel??

LOL... ONLY the dark side, remove the ribbon of it from T-CON Socket.. and upload photo here... other sockets don't touch at all

[Alternet]

Re: Bad T-con or bad panel??

not LVDS... only the ribbon cable between effected side and panel... just remove it out from T-CON socket side... don't touch any ribbon now at the panel socket side

Ok i just want to clarify again.

so for the test you want me disconnect both ribbons from the t-con side (not at the same time) and verify that side goes white and the other has picture.


Also i don't know if this is useful info in anyway but when doing the tap method i was taping on the t-con side of the ribbon cable

[nomoresonys]

Re: Bad T-con or bad panel??

Right you already know which side is bad.

[Diah]

Re: Bad T-con or bad panel??

not LVDS... only the ribbon cable between effected side and panel... just remove it out from T-CON socket side... don't touch any ribbon now at the panel socket side

[nomoresonys]

Re: Bad T-con or bad panel??

Just the ribbons one at a time like you did before.

[Alternet]

Re: Bad T-con or bad panel??

Man, this set you had never saw picture on it before replacing BL, so theory when you repaired the BL you got short at ribbon or sockets.. after you played with tape trick some how the short are gone. to verify this theory now if you remove the ribbon only from T_CON side of the effect side you will have white clear half picture not as before you showed us.. do it and let us focus on the real issue.

I think I might have been wrong on saying I never saw a picture. In my original post about the back lights I did say I saw the LG logo pop up for a minute. I honestly cant remember now if I did or not. But my post says I did so i have to assume the panel was able to display picture at one point and that i just couldn't see it because the backlight was dead.

Are you wanting me to disconnect the LVDS cable from the tcon or just the ribbon cables to the panel driver boards? (I cant do it right now but i will do it tonight and take a picture)

[nomoresonys]

Re: Bad T-con or bad panel??

Yep, do diah's test again, see what you get.

[Diah]

Re: Bad T-con or bad panel??

Man, this set you had never saw picture on it before replacing BL, so theory when you repaired the BL you got short at ribbon or sockets.. after you played with tape trick some how the short are gone. to verify this theory now if you remove the ribbon only from T_CON side of the effect side you will have white clear half picture not as before you showed us.. do it and let us focus on the real issue.

[Alternet]

Re: Bad T-con or bad panel??

That's a good picture, it's so close up I can't tell, is it on top bottom or side, can you show more pictures maybe not so close up?

that is the lower left side (if looking from the back of the display). I don't have any other pictures right now. I can take some when i'm home tonight if that will help.

is that what you mean by tab? or do you mean the ribbons connecting the panel drivers to the panel?

[Diah]

Re: Bad T-con or bad panel??

its Normal at the rand, out side the display area..

[nomoresonys]

Re: Bad T-con or bad panel??

That's a good picture, it's so close up I can't tell, is it on top bottom or side, can you show more pictures maybe not so close up?

[Alternet]

Re: Bad T-con or bad panel??

Well your latest picture looks like what I've seen many times but doesn't have to be, it looks like you have a bad tab bond connection on that side. If it is some have had good luck with "shimming", there's quite a few videos on youtube covering the technique.
ps, Please don't attack me.

Just want to make sure i know what your talking about. By tabs are you referring to what I have circled in red in the attached picture.

Also i'm still not quite sure what to make of the spot pointed to by the green arrow. Is this damage from a short or is this common to see in these panels? (as I said before I do not have much experience with lcd panels)

[nomoresonys]

Re: Bad T-con or bad panel??

Well your latest picture looks like what I've seen many times but doesn't have to be, it looks like you have a bad tab bond connection on that side. If it is some have had good luck with "shimming", there's quite a few videos on youtube covering the technique.
ps, Please don't attack me.

[neilc6]

Re: Bad T-con or bad panel??

If the TV has tabs on the bad side, rip them off.

[Alternet]

Re: Bad T-con or bad panel??

this is yours when i wrote about tape...

and this bellow now the same way you are attacks some one like to help..



you shared your problem over this forum.. and many users over here like to help and they did by sharing their experiences and KNOW HOW.. not to put you at experimentation process.

if this doesn't suit you then do what ever you like. good luck

I'm not trying to attack you at all. Please dont take it that way. I was actually hoping you had a schematic. I was going to ask if you could send me a copy.

I was in no way trying to attack you. I'm sorry that it came across that way.

[Diah]

Re: Bad T-con or bad panel??

Do you have any detail as to what this does? How does blocking some of the signals lead to a full picture again?

this is yours when i wrote about tape...

and this bellow now the same way you are attacks some one like to help..

How do you know pin 44 is the gama? do you have a schematic for this tv or are you just making an educated guess based on my experimentation results?
(again though I don't have a back ground in lcd panel development so I don't know.)

you shared your problem over this forum.. and many users over here like to help and they did by sharing their experiences and KNOW HOW.. not to put you at experimentation process.

if this doesn't suit you then do what ever you like. good luck

[Alternet]

Re: Bad T-con or bad panel??

also pin 44 are Gama..
at this point you reached i would suggest you dont touch the ribbon socket from panel side any more.. let it work with external live signal for view time as it start from cold state( out from wall sockt ) if the condition remain as ou show us in the photos. not bad at all if you do risk and investment little by replacing T-CON... but no one be sure what the result.. just try.

How do you know pin 44 is the gama? do you have a schematic for this tv or are you just making an educated guess based on my experimentation results?

If there is damage to the panel could it act like this? I don't have a huge background with lcd engineering but I do have an electronics engineering background. I would think that the lcd pixels are in fact functioning letting or blocking the amount of light through but the thing controlling them is not sending the correct information. (again though I don't have a back ground in lcd panel development so I don't know.)

[Diah]

Re: Bad T-con or bad panel??

There is a little buzz but it more sounds like a buzz from a switching power supply not the loud buzz that I was getting that sounded liked a short.

I don't have a picture of the when pin 44 was covered. but just imagine what it would look like if your cranked up the brightness to extreme levels but only for one side of the screen.

also pin 44 are Gama..
at this point you reached i would suggest you dont touch the ribbon socket from panel side any more.. let it work with external live signal for view time as it start from cold state( out from wall sockt ) if the condition remain as ou show us in the photos. not bad at all if you do risk and investment little by replacing T-CON... but no one be sure what the result.. just try.

[Alternet]

Re: Bad T-con or bad panel??

did you still hear puzzle?? can you show us picture when cover tape make the defect side brighter?

There is a little buzz but it more sounds like a buzz from a switching power supply not the loud buzz that I was getting that sounded liked a short.

I don't have a picture of the when pin 44 was covered. but just imagine what it would look like if your cranked up the brightness to extreme levels but only for one side of the screen.

[Diah]

Re: Bad T-con or bad panel??

did you still hear puzzle?? can you show us picture when cover tape make the defect side brighter?